单项选择题

Which of the following may be an appropriate title of the passage

A．Darwin's Theory Modified.
B．How Animals Evolve.
C．Evolution in Hard Places.
D．Where Did Large Sea Animals Originate.
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单项选择题
Two recent papers in Science magazine claim to have found evidence which contradicts the traditional notion that _________.
A．relatively harsh environments are the nurseries of evolution
B．evolution occurred in regions with biological diversity
C．new forms of life come into being in near-shore areas
D．species of birch and redwood originated in the south
单项选择题
The word innovations in the second paragraph means _________.
A．new theory
B．new phenomenon
C．changes
D．new inventions
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